Indiglo is a brand name of Indiglo Corporation, solely owned by Timex for licensing purposes. Timex electroluminescent

Electroluminescence

Electroluminescence is an optical phenomenon and electrical phenomenon in which a material emits light in response to the passage of an electric current or to a strong electric field...

 lamps, branded Indiglo, were introduced through Kmart

Kmart

Kmart, sometimes styled as "K-Mart," is a chain of discount department stores. The chain acquired Sears in 2005, forming a new corporation under the name Sears Holdings Corporation. The company was founded in 1962 and is the third largest discount store chain in the world, behind Wal-Mart and...

 in 1992 in the Ironman watch line. The technology is comparable to the Illuminator technology used by Casio

Casio

is a multinational electronic devices manufacturing company founded in 1946, with its headquarters in Shibuya, Tokyo, Japan. Casio is best known for its electronic products, such as calculators, audio equipment, PDAs, cameras, musical instruments, and watches...

.

Other watch models exhibit an Indiglo backlight that only lights up the numbers, rather than the entire LCD display, which is achieved by means of a specialized film that inverts the LCD transmissivity. The Timex Datalink USB

Timex Datalink

Timex Datalink or Timex Data Link was a line of watches manufactured by Timex. As the name implies datalink watches are capable of data transfer through linking with a computer...

 uses this technology. Indiglo devices emit a distinct indigo

Indigo

Indigo is a color named after the purple dye derived from the plant Indigofera tinctoria and related species. The color is placed on the electromagnetic spectrum between about 420 and 450 nm in wavelength, placing it between blue and violet...

 or white or other color.

Indiglo has been used for other devices such as clock radios, electronic personal organizer

Personal organizer

A personal organizer, day planner, personal analog assistant, or personal planner is a small book/binder, designed to be portable, usually containing a diary, calendar, address book, and other sections usually including blank paper. It may also include pages with useful information, such as maps,...

s, and nightlight

Nightlight

A nightlight is a small light fixture, often electrical, placed for comfort or convenience in dark areas or areas that become dark at certain times, such as in an emergency...

s.

See also

• Electroluminescence
  Electroluminescence
  Electroluminescence is an optical phenomenon and electrical phenomenon in which a material emits light in response to the passage of an electric current or to a strong electric field...
  
  
• Timex
• Casio
  Casio
  is a multinational electronic devices manufacturing company founded in 1946, with its headquarters in Shibuya, Tokyo, Japan. Casio is best known for its electronic products, such as calculators, audio equipment, PDAs, cameras, musical instruments, and watches...
  
  
• Illuminator (backlight)

External links

• How does an Indiglo watch work? at HowStuffWorks
  HowStuffWorks
  HowStuffWorks is a commercial edutainment website that was founded by Marshall Brain with the goal of giving its target audience an insight into the way in which many things work. The site uses various media in its effort to explain complex concepts, terminology and mechanisms, including...
  
  
• Overview of electroluminescent display technology, and the discovery of electroluminescence